8.3 Respiration

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Question 22

A fungus is grown in two culture vessels. The table shows the conditions in each vessel and measurements from the fungal cells.

Culture vessel	Oxygen supply	Rate of glucose use in mmol min⁻¹	ATP molecules built per glucose molecule
K	present	0.40	30
L	absent	6.0	2

Calculate the rate at which ATP is built in each culture vessel. Give the unit.

[2]

Using the information in the table and your answers to part (a), explain why the fungal cells in culture vessel L use glucose at a greater rate than the fungal cells in culture vessel K.

[3]

Markscheme

8.3 Respiration Questions

GCSE
Biology
8.3 Respiration

98 exam-style questions on Edexcel GCSE Biology 8.3 Respiration, covering 8.3.1 Aerobic and anaerobic respiration. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank·8.3 Respiration